Comprehensive Analysis of vro technical functions and features

China's vro technology has developed rapidly and has been widely used. Here we mainly introduce the role of vro technology, including the types and features of vro technology. Router technology is usually used in a large network environment with many nodes. It is at the network layer of the ISO/OSI model. Compared with switches and bridges, vrouters, especially high-end vrouters, have obvious advantages in implementing the interconnection of backbone networks. Highly intelligent routers support a wide range of routing protocols, network protocols, and network interfaces, its unique functions and features such as security and access control are not available in other interconnected devices such as bridges and switches. Vro technology's low-end products can be used to connect backbone network devices and small-scale endpoints. High-end products can be used to interconnect backbone networks and connect backbone networks to the Internet. In particular, the interconnection between backbone networks and the Internet is not only technically complex, but also involves communication protocols, routing protocols, and many interfaces. The information transmission speed is demanding, in addition, the requirements for network security are much higher than those in other scenarios. Therefore, the use of high-end router technology as an interconnected device has incomparable advantages over other interconnected devices.

Role of router technology

One role of a router is to connect different networks, and the other is to select the information transmission line. Selecting smooth and fast routes can greatly improve the communication speed, reduce the communication load of the network system, save network system resources, and improve the network system accessibility rate, so that the network system can exert greater benefits. From the perspective of filtering network traffic, the role of a router is very similar to that of a switch and a bridge. However, unlike switches that work on the physical layer and divide network segments physically, vrouters use specialized software protocols to logically divide the entire network. For example, a router that supports the IP protocol can divide the network into multiple sub-network segments. Only network traffic directed to a Special IP Address can pass through the router. For each received packet, the router technology recalculates its verification value and writes it to a new physical address. Therefore, using vro technology to forward and filter data is usually slower than simply viewing the physical address of a data packet. However, vro technology can improve the overall efficiency of networks with complex structures. Another obvious advantage of a vro is that it can automatically filter network broadcasts. In general, the installation process of adding a vro to a network is much more complex than that of a plug-and-play vswitch.

Vro technology types and features

Routers can be seen everywhere in networks of various levels on the Internet. The access network allows families and small enterprises to connect to an Internet service provider. routers in the enterprise network connect to thousands of computers on a campus or enterprise. The router Terminal System on the backbone network is usually not accessible directly, they connect ISP and enterprise networks on the long-distance backbone network. The rapid development of the Internet poses different challenges to backbone networks, enterprise networks, and access networks. The backbone network requires the vro to be able to forward high-speed routes to a few links. Enterprise-level routers require a large number of ports and a low price. They also require easy configuration and QoS.

1. Access vro

Connect a vro to a small enterprise customer in a home or ISP. The Access Router technology not only provides SLIP or PPP connections, but also supports Virtual Private Network protocols such as PPTP and IPSec. These protocols must run on each port. Technologies such as ADSL will soon increase the available bandwidth of various families, which will further increase the burden on access routers. As a result of these trends, the Access Router will support many heterogeneous and high-speed ports in the future, and can run multiple protocols on each port, while also avoiding the telephone exchange network.

2. enterprise-level Routers

An enterprise or campus-level router connects to many terminal systems. Its main goal is to achieve as many endpoints as possible and further support different service quality. Many existing enterprise networks are Ethernet segments connected by hubs or bridges. Although these devices are cheap, easy to install, and do not require configuration, they do not support service levels. On the contrary, networks with vrouters can divide machines into multiple collision domains and thus control the size of a network. In addition, vro technology also supports a certain level of service, which can be divided into at least multiple priority levels. However, the cost per port of the router is higher, and a lot of configuration work is required before it can be used. Therefore, the success or failure of an enterprise router lies in whether a large number of ports are provided, the cost per port is low, whether it is easy to configure, and whether QoS is supported. In addition, enterprise-level router technology is required to effectively support broadcast and multicast. Enterprise networks also need to deal with various legacy LAN technologies and support multiple protocols, including IP, IPX, and Vine. They also support firewalls, packet filtering, and a large number of management and security policies and VLANs.